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Source:https://medium.com/ Photo Source: www.quotecatalog.com By:Parker Nash Every year elite professional runners and Olympians like Galen Rupp, Emily Infeld, and Shannon Rowbury take six to eight weeks to train at altitude. They hole up in remote, high elevation locations like Flagstaff, Arizona and Utah to train as a team where they push themselves physically and mentally to the brink of exhaustion. […]









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